----- Original Message -----
From: "William Layer" <william.layer(a)comcast.net>
To: <cctalk(a)classiccmp.org>
Sent: Wednesday, January 26, 2005 9:49 PM
Subject: Back on the list, with a request for help
Hellos,
I was on this list in the later 90's, but had since lost my link. Good to
see you all, and hello to the new(er) folks.
I'm trying to repair an Altair 8800 that came to me in 'kit form'. I'm
missing the original 256 Byte memory board, and several chips have been
robbed from the chassis, including the 8080 CPU. This repair will take a
while, but I have two main concerns:
1) The control & display board has some missing chips and evidence of a
burn-out in the far lower left corner. I'd like to know if there is a way
to test the board for function prior to installation, as the installation
includes some 70 or so wires. I'd rather not install this board only to
learn that there was damage to the logic, that I failed to notice &
repair. Also, can anyone supply me with an original Altair 256Byte memory
board?
2) I need an 8080 CPU for this machine; can someone supply me with one?
Would be cool to have the original style ceramic/gold chip, but anything
that will actually work is good. Is it possible to drop an 8080A into the
Altair CPU board and remain compatible to the original 8080? I have an
8080A in an unused box.
I have good material to trade for these items, if available; let me know
what you need / want. If you have any information, please send it to the
list.
Thanks,
Bill
The 8080A should work just fine (better) you could also use a 9080.
Rich Cini has a great altair site that includes his emulator:
http://highgate.comm.sfu.ca/~rcini/classiccmp/
My site has plenty of manuals also (I mirror Howard Hartes manual).
Randy
www.s100-manuals.com